<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Document</title>
        <style>
            .box{
                width:200px;
                height: 200px;
                background: url('http://cdn.xiaohigh.com/logo.png');
                background-size: cover;
            }

            @media screen and (-webkit-min-device-pixel-ratio:2){
                .box{
                    background-image: url('http://cdn.xiaohigh.com/logo@2x.png');
                }
            }

            @media screen and (-webkit-min-device-pixel-ratio:3){
                .box{
                    background-image: url('http://cdn.xiaohigh.com/logo@3x.png');
                }
            }

        </style>
    </head>
    <body>
        <div class="box">
            
        </div>
    </body>
</html>
